Reset cas_user_identifier so it doesn't interfere with other specs
Reset cas_user_identifier so it doesn't interfere with other specs

nbudin/devise_cas_authenticatable,nbudin/devise_cas_authenticatable,tomascharad/devise_cas_authenticatable,identification-io/devise_cas_authenticatable,tomascharad/devise_cas_authenticatable,identification-io/devise_cas_authenticatable